The Seattle Seahawks added three players to their practice squad on Monday, signing cornerbacks Justin Coleman and Kevin Short and defensive end Robert Thomas.

Coleman and Short both had been rumored to be joining the team on Sunday.

Coleman went undrafted out of Tennessee in 2015 before signing with the Minnesota Vikings in May. He was cut by Minnesota on Aug. 30 and signed with the New England Patriots on Friday before being released a day later. According to the Boston Herald’s Jeff Howe, the 5-foot-11, 188-pound Coleman signed with the Seahawks’ practice squad over similar offers from both the Vikings and patriots.

Before joining the Kansas City Chiefs following July’s supplemental draft, the 6-foot, 192-pound Short’s last game action came with Fort Scott Community College in 2012. Short then signed with the Kansas Jayhawks, where he redshirted in 2013 before being ruled academically ineligible in 2014, according to Arrowhead Pride’s Joel Thorman.

Thomas signed with Washington as an undrafted free agent out of Arkansas in May 2014. The 6-foot-3, 325-pounder then spent much of the 2014 season on the team’s practice squad before being released on Saturday.

The three join the seven players who signed with the Seahawks practice squad on Sunday, all of whom had been on the team’s offseason roster: wide receivers Kasen Williams and Kevin Smith, linebacker Eric Pinkins, tackle Terry Poole, running back Rod Smith, tight end RaShaun Allen and offensive lineman Will Pericak.

The team also made the signing of free agent running back Fred Jackson official on Monday. The 34-year-old traveled to Seattle last week to visit with the team after being released by the Buffalo Bills last Monday.

Head coach Pete Carroll told 710 ESPN Seattle that he expected Jackson to play a big role in Seattle’s passing game.

“I’ve asked him to really dig into the throwing game so that he can be a third-down guy for us,” Seahawks coach Pete Carroll said on his weekly appearance on the “Brock and Salk Show.” “He’s not going to have any trouble with the run game, he’ll know what’s going on there, he’ll pick that up, but the pass-protection stuff is really what will tax him the most. He understands it, he’s a good pass-pro guy and he’s a terrific catcher, so that part is going to fit in really well.”

Jackson’s wife Danielle posted a photo of him signing his new contract on Sunday.

Jackson was listed as the Seahawks’ No. 2 running back behind Marshawn Lynch and ahead of undrafted rookie Thomas Rawls in the team’s updated depth chart on Monday.

The depth chart also listed second-year player Dion Bailey as the team’s starting strong safety in place of Kam Chancellor. Bailey, an undrafted rookie out of USC in 2014, battled fourth-year pro DeShawn Shead for the starting spot while Chancellor holds out from the team, unhappy with a contract extension he signed in 2013.

Kelcie McCray, whom the team traded for on Saturday, was listed as the No. 3 strong safety.